Steam-boiler



H. FURIVIAN, STEAM BOILER.

APPLICATION FILED NOV.24, I9I9.

Patented May Z4, M21.

2 SHEETS-SHEET I.

wniniklw r A NI @NNI H. FURMAN.

STEAM BOILER.

APPLICATION FILED IIov.24, I9I9.

Patented May 24, N21i..

2 SHEETS-SHEET 2.

NETE@ 'STATES 'HORACE FUR/MAN, 0F PETERSBURG, VB/GINIA.

STEAM-BOELER.

Application filed November 24, 1919.

vcapacity With compactn'ess and lightness in Weight are requisites. The present invention is an improvement upon the type ofv steam boiler shown and described in my prior Patent No. 1,244,316, granted October 28, 1917, it being the principal purpose of the present invention to so construct and arrange the elements of the boiler that while high steaming capacity is attained with a boiler of minimum Water circulates at high velocity, and there is a rapid escape of steam therefrom, yet the carrying of Water by the Vsteam into 'the steam drum is eifectuallyprevented.

To these and other ends the invention consists in certain improvements and combina-- tions and arrangements of parts, all as will be more fully hereinafter described, the features of novelty being pointed out particularly in the claims at the end of the specification.

In the accompanying drawings-d Figure 1 is a lfront elevation of a steam boiler constructed in accordance with the present invention, one side of the boiler being shown in section, and

Fig. 2 is a side elevation, partly in section, of the boiler as shown in Fig. 1.

Similar parts are designated by the same reference characters in the several views.y

IThe present invention is applicable generally tov steam boilers of the Water tube type, although it is particularly applicable to marine boilers Where high capacity and lightness and compactness are desirable and Speccation of Letters Patent.

dimensions in which the Y lPateiited May 241, 1921i.

Serial No. 340,233.

bodiment of the invention is shown in the present instance, but it is to be understood that' equivalent constructions are contempla ed and Will be included Within the scope of the claims.

1n the present instance the boiler comprises the usual, or a suitable grate 1, a combustion chamber 2 which may be provided With the usual fire doors, one of which is indicated by the dotted lines at 3, and an ash pit il., the Whole resting upon a suitable foundation 5. rfhe boiler comprises a set of upright pipes or manifolds 67 these upright manifolds being located at the outer corners of the boiler, also horizontal manifolds 7 which connect the corner manifolds 6 at the front and rear ends of the boiler, and horizontal manifolds 8 which connect the corner manifolds 6 at the opposite sides of the boiler. in addition to the upright corner manifolds 6 a pair of intermediate upright manifolds 9 is used, each (if these intermediate upright manifolds extending upwardly from thel respective horizontal manifolds at the front and rear of the boiler. Two sets of Water tubes 10 and 11 are provided at opposite sides of the center manifolds 9, each Water tube comprising preferably a unit which is in the form of return bends arranged horizontally. In the type of boiler as shoivn, the corner manifolds 6 constitute down-takes for the circulating Water, the intermediate upright manifolds 9 constitute up-talres for the circulating Water, and the Water tube units are connected to receive Water from the down-takes 6 and todischarge the Water heated therein into the up-talre intermediate manifolds 9. Preferably and as shown the Water tube units are connected by pipes 12 to the respective horizontal manifolds 8 which act as headers7 to distribute Water to these Water tube units, and the upper ends of the Water tube units are connected to horizontal intermediate manifolds 13 which connect the intermediate upright manifolds 9 and serve to receive the heated Water and steam from the Water tube units and to convey the same to the rip-take intermediate manifolds 9.

According to the present invention the highly heated vfater mixed with steam and which rises rapidly in the intermediate uptake manifolds 9, is conducted into a drum which is interposed between these intermediate rip-take manifolds and the steam drum, the interposed drum serving to effectually separate the water and the steam carried thereby, the steam lbeing conducted to the steam drum free from water, or substantially so, and the water being returned to 5 the dowirtake manifolds.Y To accomplish this purpose the corner down-take manifolds 6, at the front and also the rear of the boiler, are connected at their upper ends by a transverse drum 14, each of these drums 14 being of a diametell considerably larger than that of the corner manifolds 6 and the corner manifolds 6 being connected to the bottom of these drums. Each intermediate uptake manifold 9 is shorter than the adjacent corner manifolds 6, and it is connected at its `upper end to a transverse pipe 15, through the medium of a T-connection 16, or other appropriate fitting. The transverse pipe 15 leads 4from opposite sides of the manifol-d 9 for a distance preferably about midway between the intermediate manifold andthe adjacent corner manifold 6, the pipe 15 being then turned upwardly and then inwardly to communicate with the drum 14 at a point 17 which is above the bottom and below the top of the drum 14. It will be understood that each transverse pipe 15 is connected at two points 17, to the respective drum 14, and that these points of connection 17 are located at opposite sides of the longitudinal center of the drum. By this arrangement the highly heated water from the water tube units which contains a considerable quantity of steam, rises rapidly in the intermediate upright manifolds 9 and upon reaching the connection 16 at the top of these intermediate up-take manifolds, the body of water isdivided, part flowing through each branch formed by the trans- 40 verse pipe 15 and discharging at the points 17 into the drum 14. The steam contained in the water yso introduced into the drum 14 is liberated from the water, and the water collected in the bottom of the drum 14 flows out through the down-take corner manifolds which lead from the bottom of the drum 14, this return water again cir*v cnlating through the water tubes from the manifolds 8, as previously described. The steam liberated in the drums 14 is preferably vconducted from these drums into a steam drum 18 by pipes 19 which lead from the tops of the drums 14 into the bottom of the steam drum 18 at points near the ends of the steam drum, it being understood that the steam drum extends longitudinally of the boiler while the separating drums 14 extend transversely of the boiler. The point of connection of the pipes 19 to the drums 14 is also located midway or intermediately between the points of connection 17 ofthebranch pipes 15 tothe drums 14, in consequence of which the mixed steam and water discharging into the drums 14 at the points 17 will be 65 separated, and the steam taken from the drums 14 by the pipes 19 will be free of water. The steam may be drawn from the steam drum through a control or distributing valve 2O which may be of any suitable construction, and also a steam superheater 21-70 may be provided above the steam drum where such is desirable. Feed water heaters, preferably in the form of' return bends of piping 22 may also be conveniently located in racks 23 above the drums 14 and 75 at opposite sides'of the steam drum 1S, these racks being shownas supported on the transverse drums 14. Y

The boiler shown in the present instance is preferably of the sectional type, such as that fully shown and described in my prior patent referred to, it being sufficient to indicate herein that the upright corner and intermediate manifolds are detachably connected by flanged or other suitable cou- 35 plings 24 which serve to detachably unite `superposed units' of the boiler so that additional boiler sections provided with4 similar couplings may be interposed between the lower and'upper sections shown, in order to 90 increase the capacity of the boiler as conditions may require. The dotted lines 25 in dicate conventionally the casing which in-" closes the elements of the boiler andl cause a proper circulation of the products of conibustion past the water heating elements of the boiler.

I claim as my invention- 1. A steam boiler comprising downtake and uptake manifolds,water tube units oonnected to receive water from the downtake manifold and to discharge water into the uptake manifold, ay drum connected at its bottom to the top of the downtake manifold and connected at its side, at' points in its 105 length removed from its oint of connection with the downtake manifold, to the uptake manifold, and a steam drum connected to the top of the drum first mentioned at a point between the points of connection of the first-mentioned drum with the uptake' manifold. i

2. In af steam boiler having a pair of downtake manifolds and an intermediate uptake manifold, and water tube units connected to receive water from the downtake manifolds and to discharge water into the uptake manifold, a horizontal drum connected to the tops of the downtake manifolds, a cross pipe connected to the top of the uptake manifold and forming oppo-Y sitely extending branches which are connected to said drum at different points in its length, and a steam drum connected toV the drum first mentioned lat a point removed I from the points ofV connection of the branches of said cross pipe.V

3. In a'water-tube boiler having a pair of. upright downtake pipes, an intermediate uptake pipe, and water-tube units'connected V130 to said downtake and uptake pipes, the combination of a horizontal drum connected to the tops of said downtake pipes, a transverse pipe connected to the top of the uptake pipe and forming oppositely extending branches which are connected to said drum at points between its center and its points of connection with the downtake pipes, a steam drum connected to the drum first mentioned at a point between the points of connection of the branches of said transverse pipe.

4c. In a water-tube boiler having upright dcwntake pipes and an uptake pipe, and water-tube units connected to said downtake and uptake pipes, the combination of a horizontal drum connected at its bottom and toward its ends to the tops of the downtake and uptake pipes and having` laterally extending branches connected to a side of' the drum at points between the longitudinal center and its points et connection with the downtake pipes, and a steam drum connected to the top of the drum at a point between its points' of connection with said branch pipes.

5. In a water-tube steam boiler having upright downtake pipes and an intermediate uptake pipe at its opposite ends, and water-tube units connected to the downtake and uptake pipes, a pair of transverse drums each connecting the tops of the downtake pipes at the respective end of the boiler, branched pipes connecting each uptake pipe with the respective drum, and a steam drum arranged above the drums irst mentioned and connected to the latter drums at points between its point of connection with said branched pipes.

In testimony whereof l have hereunto set my hand in presence of two subscribing` witnesses.

HORACE FURh/IN.

Witnesses:

MABEL E. PETERSON, H. B. GILLIAM. 

